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This FAA Alaskan Region Public Affairs Office release, dated March 5, 1987, is a computer printout of recorded FAA radar data for Japan Air Lines Flight 1628 on November 17, 1986. It covers 38 minutes of computer time and lists 105 radar returns. Of these, 86 are usable and 19 are uncorrelated primary returns. The printout records when the pilot first asked about other traffic and when he said he could not see the UFO. It also explains that uncorrelated returns occur when the primary and beacon signals do not match in position.
“John Greenewald”1 page
TIME ACID/SK ABC/SY RBC FRM BALT PACP PDEG PRAN BY BY DDET DRAN XV XV HDG SPD ADS C SYS DIS SUBSYS = 1 TOTAL = 1 MODE C TOTAL = 1 2:20:41.574 JL1629 -4037 1550 1550 47 350 226 19 120.22 41.04 114.73 19 122.20 -21 -499 162 507 UAR M 1 NPM 41.01 114.70 SUBSYS = 1 TOTAL = -1 MODE C TOTAL = 1
Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 179 pages are in the text index: search them above, or from the library's search.